Programmable light control with a single dial that allows users to see what setting they have selected. Choose how long light stays on after dusk, 2, 5, 8 hours or until dawn. Micro-processor intelligence helps determine more accurate off-time in the morning. Random off option deters intruders. Outdoor use with rain tight fixture. Do not use with opaque or frosted glass fixtures. Contact plunger allows optimization of the sensor window direction. Works with incandescent, compact fluorescent and LED bulbs, 100W max bulb upward, 60W max bulb downward, 120V, 60Hz.